The letter to President Fernández de Kirchner is availableHERE, and the letter from Alberto Nisman to Chairman Michael McCaul is available HERE.

Chairman McCaul on the letter: “Alberto Nisman’s report sheds critical light on how the United States should understand threats to our homeland that emanate from the Iranian regime. His investigation into the 1994 AMIA bombing in Buenos Aires shows that the Iranian presence in the Western Hemisphere is greater than we imagined. Iranian infiltration within countries in our region presents a clear and present danger to our homeland, as do attempts to silence or downplay this threat, and Mr. Nisman’s testimony should be heard.”

Subcommittee Chairman Duncan on the letter: “Iran’s willingness to conduct operations in the Western Hemisphere and on American soil is clear. In contrast to the U.S. State Department’s recent assessment that Iran’s influence in Latin America and the Caribbean is ‘waning,’ Nisman’s investigation revealed that Iran is deeply embedded within countries in Latin America and is ready to exploit its position to ‘execute terrorist attacks when the Iranian regime decides to do so.’ Argentina’s decision to deny Nisman permission to share his findings publicly sends a troubling message and is deeply disturbing to regional security and U.S. homeland security.”

In October 2006, Mr. Nisman indicted seven Iranians and one Lebanese-born member of the pro-Iranian Hezbollah militia for the AMIA murders. Interpol notices for their arrest were issued but none was captured. Then, late last year, the Argentine government of Cristina Kirchner announced that a “truth commission,” to be chosen by Argentina and Iran, would examine the viability of the prosecutor’s case.

To many Argentines, that seemed like letting the fox decide the fate of the chickens. But Mrs. Kirchner forged ahead, getting congress to agree. On May 20 Ahmadinejad approved Iran’s participation on the commission.

Mr. Nisman’s response was to release a mountain of evidence against Tehran into cyberspace for all the world to see.

And now he’s not allowed to testify at the U.S. House Homeland Security hearings on Iran.